Add 21/2 and 18/3
1st number: 10 1/2, 2nd number: 6 0/3
21/2 + 18/3 is 33/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 3 is 6
Next, find the equivalent fraction of both fractional numbers with denominator 6 - For the 1st fraction, since 2 × 3 = 6,
21/2 = 21 × 3/2 × 3 = 63/6 - Likewise, for the 2nd fraction, since 3 × 2 = 6,
18/3 = 18 × 2/3 × 2 = 36/6 - Add the two like fractions:
63/6 + 36/6 = 63 + 36/6 = 99/6 - 99/6 simplified gives 33/2
- So, 21/2 + 18/3 = 33/2
In mixed form: 161/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+18/3 21/2+36/3 21/4+18/3 21/2+18/6 63/2+18/3 21/2+54/3 21/6+18/3 21/2+18/9 21/2+90/3 21/10+18/3 21/2+18/15 21/14+18/3 21/2+18/21